Calculate the molar concentration of oh− ions in a 0.555 m solution of hypobromite ion (bro−; kb=4.0×10−6).

The molar concentration of OH⁻ ions in a 0.555 M solution of hypobromite ion is 1.5 × 10⁻³ M.

A Bronsted-Lowry base is a species that accepts H⁺.

Let's consider the basic reaction for hypobromite ion.

BrO⁻ + H₂O ⇄ HBrO + OH⁻

Since BrO⁻ is a weak base, we can calculate the concentration of OH⁻ using the following expression.

[OH⁻] = √(Kb × Cb)

[OH⁻] = √(4.0 × 10⁻⁶ × 0.555) = 1.5 × 10⁻³ M

where,

The molar concentration of OH⁻ ions in a 0.555 M solution of hypobromite ion is 1.5 × 10⁻³ M.

Learn more about Bronsted-Lowry bases here: link

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.

the answer for sodium is 0.186

the answer for rubidium is 0.251